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Finding the Fourth Proportional to 489,027.06, 674,859.06 and 307,858.86

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Solution

The fourth proportional to 489,027.06, 674,859.06 and 307,858.86 is: 424,846.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,027.06 : 674,859.06 = 307,858.86 : x
  2. Step 2: Convert to fraction form
    489,027.06/674,859.06 = 307,858.86/x
  3. Step 3: Cross multiply
    489,027.06x = 674,859.06 × 307,858.86
  4. Step 4: Simplify right side
    489,027.06x = 207,761,340,872.27
  5. Step 5: Solve for x
    x = 207,761,340,872.27/489,027.06
  6. Step 6: Final answer
    x = 424,846.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.